Combination-burner.



W. P. BOYLE.

COMBINATION BURNER. APPLICATION men Nov. 16. mm

L wfififin Patented Feb. 11, 1919.

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COMBINATION -BURNER-.

Specification of Letters Patent.

Patented Feb, 111, 1919..

Application filed November 16, 1918. Serial No. 262,889.

- To all whom it may concern:

Be it known that 1, WILLIAM P. BOYLE, a citizen of the United States ofAmerica, and resident of Chicopee, in the county of Hampden and State ofMass, have invented certain new and useful Improvements inCombination-Burners, of which the following is a full, clear, and exactdescription.

This invention relates to improvements in combination burners for use inburning oil or gas or both simultaneously, and one of the leadingobjects of the invention is the provision of a burner, wherein the gasnozzle can be detached from the air nozzle or adjusted thereon, so as toregulate the flow of gas.

Another object of the invention is the provision of a burner wherein theparts can be quickly separated.

With the above and other objects in view the invention relates tocertain improvements, constructions, and combinations of pa its,

' clearly described in the following specification, and fullyillustrated in the accompanying drawings, in .which: i

Figure 1 is a longitudinal sectional view of my improved burner.

Fig. 2 is a front elevation thereof. Referring to the accompanyingdrawings illustrating the practical embodiment of my invention 5designates the body of the burner,

which is formed with the oil inlet 6, internally threaded to receive afeed tube or pipe,

and said body 5 is also formed with an air inlet 7, which isconsiderably larger in diameter than the oil inlet 6. The oil inlet 6 isseparated from the air inlet 7 by means of a partition or wall 8-, whichis formed with a small oil assage 9, closed by the end of the needle vave 10. v

The needle valve 10 is threaded through a nut 12, which is threaded inthe boss 13, formed on the body 5. A gland 14 is mounted on the stemof'the needle valve 10 to prevent leakage, and the outer end of thisvstem carries a suitable handle 15, whereby the valve may be suitablyadjusted.

An oil pipe 11 is threaded in the division wall or partition 8, so thatthe bore of said oil pipe will be axially alined with the oil passage 9;A pipe or tube 16 is threaded in the opening 5' of the body 5 so as toprovide a relatively large air passage 16 around the oil pipe 11. Theforward end of the tube or pipe 16 is formed with a frusto-conical mouth16". A burner tip 17 is threaded on the forward end of the oil pipe 11,and is .stream to the flame.

face of the tube 16, so as to maintain the needle passage 17 in trueconcentric relation to the bore of the tube 16. The mouth 16 of the tube16 is concentrically spaced from the burner tip- 17 so as to provide anannular space 18 which surrounds the jet forming opening 17 I In orderto render the burner useful for burning natural gas or any other gas, Imount a tube nozzle 19 on the tube or pipe 16, and this nozzle 19 isformed with an internal shoulder 19 which is threaded on the externalthreads 16 of the air tube l6, and provides a relatively large annularpassage 20, formed in the air tube 16. The forward end of the nozzle 19is formed frusto" conical and maybe moved upward or outward from thefrusto-conical tip of the air tube, so as to var the gas stream flowingthrough the space tween the nozzle 19 and the air tube or pipe 16. Gasis admitted to the passage 20 by means of a gas inlet 21, which projectsfrom one side of the body of the nozzle 19, and is shown tobeinternallythreaded to receive a gas feed pipe.

When it is desired to clean the various parts all that is necessary isto unscrew the I nozzle 19, from thetube 16,.and then unscrew the tube16from the body 5, thus clearing the burner tip 17, and permitting theremoval of the burner tip.

Throughout the natural gas belt region the supply of gas is notsuflicient in the winter to supply the needs of industrialestablishments and households, and the law requires that the' supply befirst provided to householders. This results in the industrial placessubstituting oil. These concerns naturally desire that oil be used withthe same burners employed for using gas.

The great majority if not all concerns using oil burners desire at sometime or other ized when converted into a gas burner or gas and oilburner and that the air supply be constant and automatically controlledby the flow of oil or gas and that the temperature of the furnace be notlowered by surplus air so as to require an excessive combustion of 011.v I

In the manufacture of combmed 011 and gas burners it is important that aminimum amount of metal be employed to limit the amount'of radiation ofheat and to permit of the economical manufacture of the burners andtheir compact mounting.

Having described my invention I claim The combination with a burner bodyconsisting of a casing provided with an oil inlet and an independent airinlet and a partition separating said inlets from each other andprovided with an opening therein, means for closing said opening, anoil: pipe secured at one end to the partition to receive oil through theopening thereof, a burner tip on said -oil pipe, said casing beingprovided with a single outlet formed with internal screw threads, an airpipe threaded in said outlet and projecting from said casing andneeaeea' having a conically reduced outer end surrounding said burnertip, and a T-shaped cap having an internal shoulder threaded on said airp1pe and providing a concentric air space around said air pipe, said Thaving an gas supply, said T being detachable from said air pipe topermit the use of the elements remaining as a complete oil burner, andserving whenconnected to said air pipe as a means for providing acombined gas and oil burner or a as burner alone.

Signed by me at ico pee Mass, in presence of a subscribing witness.

WILLIAM'P. BOYLE. Witness: Connnmus P. CROWLEY.

